condition mean min max ZT0-3 44.75 44.75 44.75 ZT4-7 38.2 38.2 38.2 ZT8-11 19.349999999999998 19.349999999999998 19.349999999999998 ZT12-15 42.7 42.7 42.7 ZT16-19 44.45 44.45 44.45 ZT20-23 25.4 25.4 25.4